Yesterday, someone found out that Amy Rose was playable in Sonic Xtreme.https://www.sonicstadium.org/2017/08...-models-found/
She doesn't have a Melee Weapon such as her iconic Piko-Piko Hammer, but to throw Rings at enemies. Also, her Sprite Set is awfully similar to Sonic's. What do you say? An interesting concept?

Sonic Booms appearance does change her clothes and personality. In Sonic Boom she's no longer just a girl whos in love sonic, she's a feminist who decides to fight for herself when she needs too, but she still likes Sonic, but it's never stated outright because it's too awkward

That is a nice find, although I really hope that wasn't going to be her final model design. It's atrocious to look at, and it's as if their only reference of her was the Sonic CD sprite and nothing else.